If I just earned my Advanced ScrumMaster™ (A-CSM™) and already have two years of work experience as a ScrumMaster, do I have to wait before taking the Certified Scrum Professional - ScrumMaster (CSP-SM™) educational offering?

No need to wait. If you already have at least 24 months of work experience as a ScrumMaster (from within the past five years) and have successfully earned your A-CSM, you can enroll in a CSP-SM educational offering without waiting. You will need to add at least 24 months of ScrumMaster work experience to your Scrum Alliance® dashboard in order to satisfy the CSP-SM work experience requirement. Go here to find CSP-SM educational offerings.